I NEED ANSWER ASAP PLEASE!

e

Step-by-step explanation:

C, D, E

Step-by-step explanation:

The digit after the decimal point is in the tenths position

If the digit after this is > 5 then tenths digit goes up by 1

If the digit after this is < 5 then the tenths digit remains unchanged

A

78.405 ( the digit after the tenths digit is 0 ) , so

= 78.4

C

78.48 ( the digit after the tenths digit is 8 ) , so

= 78.5

D

78.51 ( the digit after the tenths digit is 1 ), so

= 78.5

E

78.54 ( the digit after the tenths digit is 4 ) , so

= 78.5

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.